Summary
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 and 747-400F series airplanes. This AD was prompted by an evaluation that determined fatigue cracks could develop in the underwing longerons. This AD requires repetitive inspections of the underwing longerons and certain fuselage skins for any crack, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2019-0524
Document Number
2019-23074
Type
Rule
Publication Date
October 23, 2019
Effective Date
November 27, 2019
Affected Manufacturer
The Boeing Company
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2019-0524
Topics
Official Documents
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